<template>
	<view>
		<!-- 轮播图区域 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
		  <swiper-item v-for="(item, i) in goods_info.pics" :key="i">
		    <image :src="item.pics_big" @click="preview(i)"></image>
		  </swiper-item>
		</swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info-box" >
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名称 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费==={{cart.length}}</view>
    </view>
    <!-- 商品详情信息 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品导航组件 -->
    <view class="goods_nav">
      <!-- fill 控制右侧按钮的样式 -->
      <!-- options 左侧按钮的配置项 -->
      <!-- buttonGroup 右侧按钮的配置项 -->
      <!-- click 左侧按钮的点击事件处理函数 -->
      <!-- buttonClick 右侧按钮的点击事件处理函数 -->
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
    </view>
	</view>
</template>

<script>
  import { mapState,mapMutations,mapGetters} from 'vuex'
	export default {
		data() {
			return {
				goods_info:{},
        options: [{
              icon: 'shop',
              text: '店铺'
            }, {
              icon: 'cart',
              text: '购物车',
              info: 2
            }],
            // 右侧按钮组的配置对象
            buttonGroup: [{
                text: '加入购物车',
                backgroundColor: '#ff0000',
                color: '#fff'
              },
              {
                text: '立即购买',
                backgroundColor: '#ffa200',
                color: '#fff'
              }
            ]
			};
		},
    computed:{
      goods_attr(){
        return Object.keys(this.goods_info)
      },
      ...mapState('m_cart',['cart']),
      ...mapGetters('m_cart',['total'])
    },
    watch:{
      total:{
        handler:function(newval){
          this.options[1].info=newval
        },
        immediate:true
      }
    },
    onLoad(options) {
      //获取商品信息
      this.getGoodsInfo(options.goods_id)
    },
    methods: {
      ...mapMutations('m_cart',['addCart']),
      async getGoodsInfo(id) {
        const{data:res} =await uni.$http.get('/api/public/v1/goods/detail?goods_id='+id)
        //错误处理
        if(res.meta.status!=200) return uni.$showToast()
        res.message.goods_introduce=res.message.goods_introduce.replace(/<img/g,'<img style="display:block"').replace(/webp/g, 'jpg')
        this.goods_info=res.message
      },
      preview(i) {
        uni.previewImage({
            // 预览时，默认显示图片的索引
              current: i,
              // 所有图片 url 地址的数组
                  urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      // 左侧按钮的点击事件处理函数
      onClick(e) {
        if (e.content.text === '购物车') {
          // 切换到购物车页面
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      buttonClick(e){
        if(e.content.text==="加入购物车"){
          this.addCart({
                     goods_id: this.goods_info.goods_id,       // 商品的Id
                     goods_name: this.goods_info.goods_name,   // 商品的名称
                     goods_price: this.goods_info.goods_price, // 商品的价格
                     goods_count: 1,                           // 商品的数量
                     goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
                     goods_state: true                         // 商品的勾选状态
          })
        }
      }
    }
	}
</script>

<style lang="scss">
swiper {
  height: 750rpx;

  image {
    width: 100%;
    height: 100%;
  }
} 
.goods-info-box {
  padding: 10px;
  padding-right: 0;

  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }

  .goods-info-body {
    display: flex;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
      padding-right: 10px;
    }
    // 收藏区域
    .favi {
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }
  // 运费
  .yf {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
}
.goods-detail-container {
  // 给页面外层的容器，添加 50px 的内padding，
  // 防止页面内容被底部的商品导航组件遮盖
  padding-bottom: 50px;
}

.goods_nav {
  // 为商品导航组件添加固定定位
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
</style>
